.There are five pairs______, but I’m at a loss which to buy. A.to be chosen B to choose from C . to choose D for choosing
My grandfather is as _______as a yong man and hates sitting around doing nothing all day . A.enthusiastic B.energetic D.attractive D.sensitive
Contrary to popular _______,eating carrots does not improve your eyesight .
It is thought that meteories (陨星)may hold clues about the ________of life on Earth .
He is having a family party in ________of his 84th birthday .
It is important to know about the cultural differences that________cause problems.